wp_set_post_terms not updating with WP Cron Event

Question

I have a jobs board custom post type (job_listings) with a taxonomy (cvl_job_status) attached with various tags assigned, namely; Live, Filled and Expired.

Each job post has a custom field (cvl_job_expires) with an expiry date.

Using a WP Cron Event I want to change the taxonomy tag from Live to Expired if today's date is greater than the saved expiry date.

Can't see what's wrong with the following code, first and foremost $post_ids is returning an empty array.

can anyone help?

TIA

add_action('cvl_job_status_cron', 'cvl_mark_as_expired');

function cvl_mark_as_expired() {

  global $post;

  $post_ids = get_posts( 
    [
      'post_type' => 'job_listing',
      'posts_per_page' => -1,
      'no_found_rows' => true,
      'fields' => 'ids', //again, for performance
      'tax_query' => array(
        array(
          'taxonomy' => 'cvl_job_status',
          'field' => 'id',
          'terms' => 158, // ID of 'Live' tag
        )
      )
    ] 
  );

  var_dump($post_ids); // this returns as empty??

  foreach($post_ids as $post_id) {

    $key = 'cvl_job_expires'; // custom field name
    $expire_date = get_post_meta($post_id, $key, true); // Expiry Date saved as (d M y)
    $todays_date = date('d M y'); // get todays date

    if ($expire_date < $todays_date) {

      $taxonomy = 'cvl_job_status';
      $tag      = array( 159 );  // ID of 'Expired' tag

      wp_set_post_terms( $post_id, $tag, $taxonomy );

      //  I have also tried this with
      //  wp_set_object_terms( $post_id, $tag, $taxonomy );

    }

  }

}

(The cvl_job_status_cron event is running and this function cvl_mark_as_expired is attached to it as shown in the Wp Cron-Events Plug-In)

Answer 1

Now Working with Wp Query - Thanks to Milo in the comments

add_action('cvl_job_status_cron', 'cvl_mark_as_expired');

function cvl_mark_as_expired() {

  global $post;

  $args = array(
    'post_type'              => array( 'job_listing' ),
    'posts_per_page'         => '-1',
    'fields'                 => 'ids',
    'tax_query'              => array(
      'relation' => 'AND',
      array(
        'taxonomy'         => 'cvl_job_status',
        'terms'            => 'live',
        'field'            => 'slug',
        'include_children' => false,
      ),
    ),
  );

// $post_ids = get_posts($args);

  $post_ids = new WP_Query( $args );

  if ( $post_ids->have_posts() ) {

    while ( $post_ids->have_posts() ) {

    $post_ids->the_post();

    $post_id = get_the_ID();

    $key          = 'cvl_job_expires'; // custom field anme
    $expire_date  = get_post_meta($post_id, $key, true); // Now saved as Unix Timestamp
    $todays_date  = time(); // get todays date

      if ($expire_date < $todays_date) {

        $taxonomy = 'cvl_job_status';
        $tag      = array( 159 );  // 'Expire' tag id is 159

        wp_set_post_terms( $post_id, $tag, $taxonomy );

      }

    }

  }

}