UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'M4xvybjrnzcvNuv+byS5rW3IZKhARNv2g7N7etLCEBs=' 
WHERE 
  key_id = '53d099b6cbea23a8c60a9d7f2c488cc56271dacadaeeaecf633e3cb982d2c785' 
  AND (
    token = 'M4xvybjrnzcvNuv+byS5rW3IZKhARNv2g7N7etLCEBs=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )