Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a669b8c0c821ca468b05be6d7b5392714bc0c114d39d5c992b3062f84c184a15' 
  AND token = '9tqNo3V27JVXbx60qD5UeIlMr4bzikbOorklM5JH59A=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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