@font-face {
font-family: "PT Serif";
  src: url("../fonts/ptserif-normal.eot");
  src: local('☺'), 
  url("../fonts/ptserif-normal.eot?#iefix") format("embedded-opentype"), 
  url("../fonts/ptserif-normal.woff") format("woff"),
  url("../fonts/ptserif-normal.ttf") format("truetype"), 
  url("../fonts/ptserif-normal.svg#PT Serif") format("svg");

  font-weight: normal;
  font-style: normal;
}

@font-face {
  font-family: "PT Serif";
  src: url("../fonts/ptserif-bold.eot");
  src: local('☺'), 
  url("../fonts/ptserif-bold.eot?#iefix") format("embedded-opentype"), 
  url("../fonts/ptserif-bold.woff") format("woff"), 
  url("../fonts/ptserif-bold.ttf") format("truetype"), 
  url("../fonts/ptserif-bold.svg#PT Serif") format("svg");

  font-weight: bold;
  font-style: normal;
}

@font-face {
  font-family: "PT Serif";
  src: url("../fonts/ptserif-italic.eot");
  src: local('☺'), 
  url("../fonts/ptserif-italic.eot?#iefix") format("embedded-opentype"), 
  url("../fonts/ptserif-italic.woff") format("woff"), 
  url("../fonts/ptserif-italic.ttf") format("truetype"), 
  url("../fonts/ptserif-italic.svg#PT Serif") format("svg");

  font-weight: normal;
  font-style: italic;
}

@font-face {
  font-family: "PT Serif";
  src: url("../fonts/ptserif-bolditalic.eot");
  src: local('☺'), 
  url("../fonts/ptserif-bolditalic.eot?#iefix") format("embedded-opentype"), 
  url("../fonts/ptserif-bolditalic.woff") format("woff"), 
  url("../fonts/ptserif-bolditalic.ttf") format("truetype"), 
  url("../fonts/ptserif-bolditalic.svg#PT Serif") format("svg");

  font-weight: bold;
  font-style: italic;
}

@font-face { 
  font-family: 'Web font'; 
  src: url('webfont.woff2') format('woff2'), 
       url('webfont.ttf')  format('truetype'), /* Только если нужна поддержка старых Android, иначе закомментировать */ 
       url('webfont.woff') format('woff'); 
  font-weight: normal; 
  font-style: normal; 
}

header("HTTP/1.1 403");
exit;

services:
    _defaults:
        autowire: true
        autoconfigure: true
        bind:
            App\Repository\Repository $cachedRepository: '@App\Repository\User\CachedUserRepository'

    App\Repository\Repository: '@App\Repository\User\DoctrineUserRepository'
    App\Entity\UniqueEntityInterface: '@App\Entity\User'

    user_exists_checker:
        class: App\ExistsChecker
        bind:
            App\Repository\Repository: '@App\Repository\User\ApiUserRepository'

user_exists_checker:
    class: App\ExistsChecker
    bind:
        App\Repository\Repository: '@App\Repository\User\ApiUserRepository'

_defaults:
        autowire: true
        autoconfigure: true
        bind:
            App\Repository\Repository $cachedRepository: '@App\Repository\User\CachedUserRepository'

$obItem = $obBasket->getExistsItem('catalog', $productId, [
	0 => ['CODE' => 'PROP1', 'VALUE' => 'electron'],
	//......
]);

$obItem = $obBasket->getExistsItem('catalog', $productId, [
	0 => ['CODE' => 'ARTNUMBER', 'VALUE' => '235-81-03'],
	1 => ['CODE' => 'COLOR_REF', 'VALUE' => 'Черный'],
	2 => ['CODE' => 'SIZES_CLOTHES', 'VALUE' => 'XS'],
	3 => ['CODE' => 'CATALOG.XML_ID', 'VALUE' => 'clothes_offers_s1'],
	4 => ['CODE' => 'PRODUCT.XML_ID', 'VALUE' => '332#337'],
]);

\Bitrix\Main\Loader::includeModule('sale');

$siteId = 's1';
$fUserId = \Bitrix\Sale\FUser::getId();
$productId = 139;
$productByBasketItem = null;
$bProductInBasket = false;

$basket = \Bitrix\Sale\Basket::loadItemsForFUser($fUserId, $siteId);
$basketItems = $basket->getBasketItems();

if($basketItems) {
	foreach($basketItems as $basketItem) {
		if($basketItem->getField('PRODUCT_ID') == $productId) {
			$productByBasketItem = $basketItem;
			$bProductInBasket = true;
			break;
		}
	}
}

var_dump($bProductInBasket);
var_dump($productByBasketItem);