Consistency level for update operations using keys


I update a document using keys as in the example below:

UPDATE my_bucket
USE KEYS $doc_keys
SET foo = $foo, bar = $bar
WHERE baz IN $baz_baz

I see that GSI indexes are not in use.

My question is if there any meaning for consistency level in such case?

I tried Couchbase CE 5.1.1 on Ubuntu 16.04


USE KEYS will not use indexes and so no impact on consistency level settings (no meaning).

Thank you for the reply!