I’m writing a search in ajax, i also need to search for products by sku, when I add meta_query it stops working

$query = new WP_Query($args = array(
    'post_type'             => 'product',
    'post_status'           => 'publish',
    'ignore_sticky_posts'   => 1,
    's'                     => $_POST['s'],
    'posts_per_page'        => 6,
    'meta_query' => array(
                array(
                    'key' => '_sku',
                    'value' => $_POST['s'],
                    'compare' => 'LIKE'
                )
            )
));