wp_query based on custom fields true/false

// WP_Query arguments
$args = array (
	'post_type'              => array( 'post' ),
	'post_status'            => array( 'publish' ),
	'nopaging'               => true,
	'posts_per_page'         => '5',
	'order'                  => 'DESC',
	'orderby'                => 'rand',
	'monthnum'               => '1',
	'meta_query'             => array(
		array(
			'key'       => 'breaking',
			'value'     => 'true',
			'compare'   => '=',
			'type'      => 'BINARY',
		),
	),
);

// The Query
$query = new WP_Query( $args );

// The Loop
if ( $query->have_posts() ) {
	while ( $query->have_posts() ) {
		$query->the_post();
		// do something
	}
} else {
	// no posts found
}

// Restore original Post Data
wp_reset_postdata();