Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '38c4f91fca16bdbb456a4ab0d2da348611ab42572d1925f9325bae33d6ce5de2' 
  AND token = 'JaVnisTbOXcaiiWT124abMV7qHLQ8Ytk6uYNENx7lnk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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