How can I compare now and datetime ? Laravel 5.3

My code is like this :

foreach ($orders as $order) 
{
    date_default_timezone_set('Asia/Jakarta');
    $now_at = date("Y-m-d H:i:s");
    $delivered_at = $order->delivered_at->toDateTimeString();
    $delivered_after_1d = strtotime("+1 day", strtotime($delivered_at));
    $delivered_after_1d = date('Y-m-d H:i:s', $delivered_after_1d);
    if($now_at > $delivered_after_1d) 
    {
        ...
    }
}

It works

But I want change it using laravel. For example use Carbon::now(). But I'm confused

Is there anyone who can help me?

Note :

delivered_at : data type = datetime

via samuel toh