Show Binlog retention on MySQL prior to version 5.6

Question

How can I see the current Binlog retention setting for MySQL 5.5.53?

I know that version 5.6 has the command:

CALL mysql.rds_show_configuration;

Is there an equivalent for versions prior to 5.6?

I ran this command but I am not sure if this is correct:

show variables like "expire_logs_days";

Results: Variable_name | value expire_logs_days 0