UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'dNJ7aTwtpBT6ly8lMTQLQdRDIBsuJz4fjsV6+of10ow=' 
WHERE 
  key_id = '3efd639571c4196c808d5c304061bf7065d652f1430591302f0821f672809111' 
  AND (
    token = 'dNJ7aTwtpBT6ly8lMTQLQdRDIBsuJz4fjsV6+of10ow=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )