UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 't4UboCJBHDtJn3dsxZxRht0+AjCuRVKsy+7rqbDhQfM=' 
WHERE 
  key_id = '6b645fb6624d5fd3a6848fa81eaf2846906f5500251271dccee0ced23a226497' 
  AND (
    token = 't4UboCJBHDtJn3dsxZxRht0+AjCuRVKsy+7rqbDhQfM=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )