UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = '+B8MR9BkIjVdUz2mLGziM1IEEUwe/+V3h4PnO3/Cank=' 
WHERE 
  key_id = 'ef64f2608f6a0a59bd5990b4ab637b3a1e49d0bee1776bf07743ac985643cea5' 
  AND (
    token = '+B8MR9BkIjVdUz2mLGziM1IEEUwe/+V3h4PnO3/Cank=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )