Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f4eec8f26df20361c6d092f29522bf49aaaa7b5cabe7a5aba57582ba388e8c78' 
  AND token = 'EYet7s6vVIK0oJU0tvyuTI2EhBK8KN29I68WrSTV10s=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00057

JSON explain

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