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SELECT 
  1 
FROM 
  cscart_multi_declock_keys 
WHERE 
  key_id = '7789e5335d78d2b3230b9be2cf6c4bce5e63501d6598387e3ce35f365359fca3' 
  AND token = 'd96ygdkwYZaII7Fl/l9AVOqFbz4V6U7aZEdeMym3NnA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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