UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'YoTiU6gx3t3ewBtVWFFpJMkk0l4pn/iXfHZNdGkaYlk=' 
WHERE 
  key_id = '21bd228cda63254f78c29738956096a9d41cf7ac326ab065b85a7211a49d896f' 
  AND (
    token = 'YoTiU6gx3t3ewBtVWFFpJMkk0l4pn/iXfHZNdGkaYlk=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )