Laravel eloquent query

$variant = \App\ProductVariant::select('id', 'option_ids', 'price')->whereJsonContains('option_ids', $request->input('options'))->with([
            'stock' => function($query) {
                $query->select('id', 'variant_id', 'quantity');
            },
            'discount' => function($query) {
                /** @var \Illuminate\Database\Query\Builder $query */
                $query->select('variant_id', 'percents')
                    ->selectRaw('ROUND(product_variants.price * percents / 100, 2) AS price_row')
                    ->leftJoin('product_variants', 'product_variants.id', '=', 'discounts.variant_id')
                    ->where('expiration', '>', Carbon::now());
            }
        ])->first();