pagination breaks for CPT listing through a page which is front page

I’ve created a page template in order to sort and list all entries of a custom post type called my_event (as described in the WordPress Codex). When that page is set as the front page, you are able to navigate to paged=2 by clicking on ← Older posts but on paged=2 there’s no Newer posts → link and the em>← Older posts link points again to paged=2. What’s wrong? Any advice welcome! Thanks in advance.

<?php /* Template Name: My Template */ ?>
<?php get_header(); ?>
<div id="container">
  <div id="content" role="main">
    <?php if (get_query_var('paged')) { $my_paged = get_query_var('paged'); } elseif (get_query_var('page')) { $my_paged = get_query_var('page'); } else { $my_paged = 1; }
          $wp_query = new WP_Query( array (
                        'post_type' => 'my_event',
                        'meta_key' => 'date',
                        'orderby' => 'meta_value_num',
                        'order' => 'ASC',
                        'paged' => $my_paged
                        )
                      );
          get_template_part('loop','index'); ?>
  </div><!-- #content -->
</div><!-- #container -->
<?php get_sidebar(); ?>
<?php get_footer(); ?>