<?php

//get_content_types() should be called on init with priority 12 or higher, or at any action later than init (there are no registered CCTs before that action)
$result = array();
$content_type = \Jet_Engine\Modules\Custom_Content_Types\Module::instance()->manager->get_content_types( 'content_type_slug' );
if ( ! $content_type) {
  return $result;
}
//$args is an array of arguments
//like
$args = array (
  array (
    'field' => 'num1',
    'operator' => '=',
    'value' => 0,
    'type' => 'integer',
  ),
  array (
    'field' => 'cct_status',
    'operator' => '=',
    'value' => 'publish',
    'type' => 'CHAR',
  ),
);
$result = $content_type->db->query( $args, $limit, $offset, $order );