Updated at didnt change for 1 day - Query

Use the timestampupdated_at from your model. If you don't have it, add it, since there would be no other way.

Laravel can maintain it for you, once you add them. You read about it here.

After that you can query the data like this:

$models = Model::where('updated_at', '<=', Carbon::now()->subDay()->toDateTimeString())->get();