Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8596b90cde1b762c6b978e917f1c237e8a2f1d9ea3b205080394b65284818612' 
  AND token = 'YjO2ncFdpCGMX6bN7o4cXO1SnPe5pir6durbc9ZdIpU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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