Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ad859117e3368edc92eaca854b0a641c064777298f389b423c4bea4d55e9db9e' 
  AND token = 'PkgsbHEF6dF+WvjTHRR9lEt0EBm63g32rfJ7JraR7O4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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