Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e53ed346c7482adb2ce83300ead5946a2e6ce9b26560d414b54f42040929056e' 
  AND token = 'lbSjolp8ep6hKKl/6tVNwEHd9a2aOLqqL5QIoFY7YP0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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