Scheduling in my plugin

I am developing a plug-in but I can’t get the wp_schedule_event() function to work. Please see code below.

function more_reccurences() {
return array(
'minutely' => array('interval' => 60, 'display' => 'Every Minute'),
);
}
add_filter('cron_schedules', 'more_reccurences');

add_action('wp_es_expire_posts','electric_studio_auto_post_expire');

function my_activation() {
	if ( !wp_next_scheduled( 'wp_es_expire_posts' ) ) {
    wp_schedule_event(time()+60, 'minutely', 'wp_es_expire_posts');
  }
}

//do_action('es_expire_posts');

add_action('wp', 'my_activation');

function electric_studio_auto_post_expire(){
  $expiredPosts = get_expiring_posts();
  foreach($expiredPosts as $thisPostID){
    expire_post($thisPostID);
  }

}

If I uncomment the line that starts ‘do_action’ the plug-in runs, but that is not ideal.

The task is definitely scheduled as I installed the WP-CRON plugin and could see it there.

Has anyone else had this problem or knows what I have done wrong??