UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = '53tAo2oZQFEswefvWsjFxokDLg4iKqlMRetd2HJEmAk=' 
WHERE 
  key_id = '9ddfa28f475d760804e6b638e9ea6d471dcfce5c54a8f28c9536ec800feae641' 
  AND (
    token = '53tAo2oZQFEswefvWsjFxokDLg4iKqlMRetd2HJEmAk=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )