Modify search query using pre_get_posts in genesis theme.

customize_genesis_search_query.php

<?php
/**
 * Customize Search Query
 * 
 * @author Brad Trivers
 * @link http://sunriseweb.ca
 * @param object $query data
 *
 */
add_action( 'pre_get_posts', 'hotbuys_search_query' );
function hotbuys_search_query( $query ) {
  
  if( $query->is_main_query() && is_search()) {
  
		$meta_query = array(
				array(
          'key' => 'client_status',
          'value' => array('active'),
          'compare' => 'IN' 
        ),
		);
		$query->set( 'meta_query', $meta_query );
		
  }
  
}
?>