If someone performed this activity please let me know and also share history + solution
BEGIN QUERY LOGGING WITH EXPLAIN ON username;
Point to consider, enabling ONLY a specific logging for a user ( like EXPLAIN in this case) will turn off any other logging options (e.g. OBJECTS, SQL) the user would inherit from " ALL " users level . If those other logging options need to be retained for this user along with EXPLAIN, then specify all the options defined at "ALL" users level along with EXPLAIN in one BEGIN LOGGING statement for that user.