Although it is mentioned in link below that the follow constraints work for LiveQuery, it doesn't.
- 
whereLessThan, whereGreaterThan, whereLessThanOrEqualTo, whereGreaterThanOrEqualTo
parseQuery.whereLessThan("key", value);
 
- 
2 equalTo constraints on 2 different keys
query.whereEqualTo("keyA", parseObject1);
query.whereEqualTo("keyB", parseObject2);
 
Link: https://github.com/parse-community/parse-server/wiki/Parse-LiveQuery-Protocol-Specification#subscribe-message