It is about the connection between database and server with phpMyAdmin. We do not use encryption of MySQL connections on the local network or within the same server, as it does not make sense, but it uses additional server resources. This is due to the fact that there is no physical access to the local network of the data center by unauthorized people who could intercept data between servers located nearby. The same applies to scripts that connect to MySQL within the same server or one containment area. Using SSL for such purposes does not make any sense.