Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c31363159afd0a0f3c3577e80a8a7f111432b3d37e95069f48b0dcde24f92bfc' 
  AND token = 'Ei03qNVZ6giaK5VUTxnNH24qDZ58wNKAa1TbMjQi6sk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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