UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = '/xLtfM9oJYCDdXzlXQlyiPhvMDrXCIZ666sVEzQgk/Q=' 
WHERE 
  key_id = '303e96380f6e5d93fe1bbcf924a70114a0ac25a36489eea6bd02a70db5a8009c' 
  AND (
    token = '/xLtfM9oJYCDdXzlXQlyiPhvMDrXCIZ666sVEzQgk/Q=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )