UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'UmXobYiDf4zQ48NQPslKBHVIJx9v2vpivgt4aiM+C60=' 
WHERE 
  key_id = 'ad2908afbd7e1cedca36dc5433da293498b5d4b79119a12b2729b47e9010a442' 
  AND (
    token = 'UmXobYiDf4zQ48NQPslKBHVIJx9v2vpivgt4aiM+C60=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )