UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'D47V1kUG32YBEeQWL1sP0GBkoe0KxmpRafE4zbswkyI=' 
WHERE 
  key_id = '8e4982fe3f4fdd8319afb88faee5df8345849fcf493b462385ff1991bb8ee678' 
  AND (
    token = 'D47V1kUG32YBEeQWL1sP0GBkoe0KxmpRafE4zbswkyI=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )