WordPress：按标题和作者查询帖子

I'm trying to create a custom request on a WordPress website to find a post by it's title and author (the match can be case insensitive, but has to be an exact match).

Up to now, I found how to get a post by it's title even though you can't seem to add parameters such as the author, and this leads to security issues as well.

I also looked into the WP_Query parameters here but there doesn't seem to be a post_title parameter. We can still perform a search by author though.

I couldn't find an example to query only the posts matching the author and title I'm looking for.

Does anyone know how to create such a query? I wrote this code but can't get the result I expect because 'post_title' just doesn't exist, and 'name' searches for the slug:

$args = array(
    'post_title'    => $title
    'author'        => $WP_user->id
);

$my_query = new WP_Query($args);

if ( $my_query->have_posts() ) {
    //DO STUFF HERE
}