No, this no longer works due to changes in WP, details can be found here https://make.wordpress.org/core/2017/10/31/changed-behaviour-of-esc_sql-in-wordpress-4-8-3/#comment-33131
This is only my opinion, but querying by repeater sub fields is a bad idea. You can see my entire opinion on the way this should be done here https://acfextras.com/dont-query-repeaters/
