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SELECT 
  cscart_products.* 
FROM 
  cscart_products 
WHERE 
  cscart_products.product_id IN (949, 2882, 346, 952, 1786, 953, 955)

Query time 0.00073

JSON explain

{
  "query_block": {
    "select_id": 1,
    "cost_info": {
      "query_cost": "4.91"
    },
    "table": {
      "table_name": "cscart_products",
      "access_type": "range",
      "possible_keys": [
        "PRIMARY"
      ],
      "key": "PRIMARY",
      "used_key_parts": [
        "product_id"
      ],
      "key_length": "3",
      "rows_examined_per_scan": 7,
      "rows_produced_per_join": 7,
      "filtered": "100.00",
      "index_condition": "(`zdrowy_db`.`cscart_products`.`product_id` in (949,2882,346,952,1786,953,955))",
      "cost_info": {
        "read_cost": "4.21",
        "eval_cost": "0.70",
        "prefix_cost": "4.91",
        "data_read_per_join": "59K"
      },
      "used_columns": [
        "product_id",
        "product_code",
        "product_type",
        "status",
        "company_id",
        "list_price",
        "amount",
        "weight",
        "length",
        "width",
        "height",
        "shipping_freight",
        "low_avail_limit",
        "timestamp",
        "updated_timestamp",
        "usergroup_ids",
        "is_edp",
        "edp_shipping",
        "unlimited_download",
        "tracking",
        "free_shipping",
        "zero_price_action",
        "is_pbp",
        "is_op",
        "is_oper",
        "is_returnable",
        "return_period",
        "avail_since",
        "out_of_stock_actions",
        "localization",
        "min_qty",
        "max_qty",
        "qty_step",
        "list_qty_count",
        "tax_ids",
        "age_verification",
        "age_limit",
        "options_type",
        "exceptions_type",
        "details_layout",
        "shipping_params",
        "facebook_obj_type",
        "parent_product_id",
        "yml2_brand",
        "yml2_origin_country",
        "yml2_store",
        "yml2_pickup",
        "yml2_delivery",
        "yml2_adult",
        "yml2_delivery_options",
        "yml2_bid",
        "yml2_model",
        "yml2_sales_notes",
        "yml2_type_prefix",
        "yml2_offer_type",
        "yml2_market_category",
        "yml2_manufacturer_warranty",
        "yml2_expiry",
        "yml2_purchase_price",
        "yml2_description",
        "yml2_cpa",
        "buy_now_url",
        "external_id",
        "update_1c",
        "ab__stickers_manual_ids",
        "ab__stickers_generated_ids",
        "cp_og_data_type",
        "source_import_key",
        "yml_status",
        "csyml_sales_notes",
        "units_in_product",
        "show_price_per_x_units",
        "fiscal_data_1212",
        "mark_code_type",
        "shipping_ids",
        "show_videos_before_images",
        "autoplay_videos"
      ]
    }
  }
}

Result

product_id	product_code	product_type	status	company_id	amount	weight	timestamp	updated_timestamp	is_edp	edp_shipping	unlimited_download	tracking	free_shipping	zero_price_action	is_pbp	is_op	is_oper	is_returnable	return_period	out_of_stock_actions	min_qty	max_qty	qty_step	list_qty_count	age_verification	options_type	exceptions_type	details_layout	shipping_params	facebook_obj_type	yml2_adult	yml2_delivery_options	yml2_cpa	external_id	update_1c	ab__stickers_generated_ids	cp_og_data_type	yml_status	units_in_product	show_price_per_x_units	fiscal_data_1212	show_videos_before_images	autoplay_videos
346	СТГ28023	P	A	1	196	0.000	1597160818	1774617661	N	N	N	B	N	R	N	N	N	Y	10	N	20	0	20	50	N	P	F	default	a:5:{s:16:"min_items_in_box";i:0;s:16:"max_items_in_box";i:0;s:10:"box_length";i:0;s:9:"box_width";i:0;s:10:"box_height";i:0;}	activity	N	a:0:{}	Y	bdbe4f4f-6b65-11e4-84c1-e811327f971d	Y	8,32,18,47	A	A	0.000	1.000	1	N	N
949	274373	P	A	1	760	0.295	1597160836	1774617687	N	N	N	B	N	R	N	N	N	Y	10	N	0	0	1	50	N	P	F	default	a:5:{s:16:"min_items_in_box";i:1;s:16:"max_items_in_box";i:12;s:10:"box_length";i:60;s:9:"box_width";i:40;s:10:"box_height";i:20;}	activity	N	a:0:{}	Y	e82f2eb7-445e-11e7-bed4-002454aa0ef1	Y	32,8,18,47	A	A	0.000	1.000	1	N	N
952	274423	P	A	1	75	0.820	1597160836	1774617659	N	N	N	B	N	R	N	N	N	Y	10	N	6	0	6	50	N	P	F	default	a:5:{s:16:"min_items_in_box";i:1;s:16:"max_items_in_box";i:6;s:10:"box_length";i:60;s:9:"box_width";i:42;s:10:"box_height";i:23;}	activity	N	a:0:{}	Y	76551a98-6a9d-11e4-a2ae-e811327f971d	Y	8,18,47,32	A	A	0.000	1.000	1	N	N
953	274422	P	A	1	204	0.000	1597160836	1774617672	N	N	N	B	N	R	N	N	N	Y	10	N	12	0	12	50	N	P	F	default	a:5:{s:16:"min_items_in_box";i:0;s:16:"max_items_in_box";i:0;s:10:"box_length";i:0;s:9:"box_width";i:0;s:10:"box_height";i:0;}	activity	N	a:0:{}	Y	2bf412a1-49d3-11e7-9ba5-002454aa0ef1	Y	32,8,18,47	A	A	0.000	1.000	1	N	N
955	СТГ28024	P	A	1	49	1.050	1597160836	1774617699	N	N	N	B	N	R	N	N	N	Y	10	N	6	0	6	48	N	P	F	default	a:5:{s:16:"min_items_in_box";i:1;s:16:"max_items_in_box";i:1;s:10:"box_length";i:54;s:9:"box_width";i:37;s:10:"box_height";i:20;}	activity	N	a:0:{}	Y	d9fde3da-89e9-11e4-b6ba-e811327f971d	Y	32,8,18,47	A	A	0.000	1.000	1	N	N
1786	820	P	A	1	12	0.000	1643630388	1774617685	N	N	N	B	N	R	N	N	N	Y	10	N	12	0	12	48	N	P	F	default	a:5:{s:16:"min_items_in_box";i:0;s:16:"max_items_in_box";i:0;s:10:"box_length";i:0;s:9:"box_width";i:0;s:10:"box_height";i:0;}		N	a:0:{}	Y	04d21b71-8255-11ec-a223-00155d327e08	Y	8,18,47	A	A	0.000	1.000	1	N	N
2882	20020	P	A	1	1	3.400	1765375418	1774617654	N	N	N		N		N	N	N	Y	10	N					N			default	a:5:{s:16:"min_items_in_box";i:1;s:16:"max_items_in_box";i:1;s:10:"box_length";i:60;s:9:"box_width";i:40;s:10:"box_height";i:20;}		N	a:0:{}	Y	e438942c-d581-11f0-bb94-00155d033637	Y		A	A	20.000	1.000	1	N	N