Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '32a4f4e9881f1263ed8b26f779ee03b22edc8e097092a6dd5ba9676761be7b7e' 
  AND token = '13xWVpzMpHSVLW9qT8Qja/DjT/zJ4VJqvQ4V0KdXACs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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