UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 't81tEJYOu3DzIak7PXOjRh5ww8m/L8V+uM+UggmRp3Y=' 
WHERE 
  key_id = '3da1c75784c1a8af0be7c32512d686874c8859fa49db1ecbb8e98b75811fb8fb' 
  AND (
    token = 't81tEJYOu3DzIak7PXOjRh5ww8m/L8V+uM+UggmRp3Y=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )