$midb = new wpdb('usuario','password','base_de_datos','localhost');

$rows = $midb->get_results("select titulo, detalles, created_at from wp_datos ORDER BY created_at DESC");
            
foreach ($rows as $row) {

    echo esc_html($row->created_at);
    echo '<br/>';
    echo htmlspecialchars_decode(esc_html($row->titulo));
    echo '<br/>';
    echo htmlspecialchars_decode(esc_html($row->detalles));

}