if ( !is_user_logged_in()) {
	function exclude_product_from_users($q){
		$current_user = wp_get_current_user();
		$prodcuts_ids = array(648);
		$q->set( 'post__not_in', $prodcuts_ids );
	}
	add_action( 'woocommerce_product_query', 'exclude_product_from_users' );
}