Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2cd134553e3602f1312f20120ef574136295c70194112781fc76a89dc43ee8f9' 
  AND token = '5RinBJZ+Ctw/lXP2d6m4aH4tLlyAgQ4yWfiWZl5z2OM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}