WordPress Sort CPT by Date and Time

sort_cpt.php

    $args = array(
        'post_type' => 'eventsapi',
        'numberposts' => -1,
        'meta_query' => array( 
            'event_date' => array( 'key' => 'event_date', 'value' => $date, 'compare' => '=' ),
            'event_time' => array(
                'relation' => 'OR',
                array( 'key' => 'event_start', 'compare' => 'EXISTS' ),
                array( 'key' => 'event_start', 'compare' => 'NOT EXISTS' ),
                ),
            ),
        'orderby' => 'event_date event_time',
        'order' => 'ASC',
        );

    $eventsapi = get_posts( $args );