Minimal Cron

Change the following:

• Prefix: svd_

function svd_deactivate() {
	wp_clear_scheduled_hook( 'svd_cron' );
}

add_action('init', function() {
	add_filter( 'cron_schedules', 'svd_schedule_cron' );
	add_action( 'svd_cron', 'svd_run_cron' );
	register_deactivation_hook( __FILE__, 'svd_deactivate' );

	if (! wp_next_scheduled ( 'svd_cron' )) {
		wp_schedule_event( time(), 'minute', 'svd_cron' );
	}
});

function svd_schedule_cron( $schedules ) {
	$schedules[ 'minute' ] = array( 'interval' => 1 * MINUTE_IN_SECONDS, 'display' => __( 'Every 1 minute.', 'svd' ) );
	return $schedules;
}

function svd_run_cron( ) {
	// Do your stuff!
}