You won't be able to use PhpMyAdmin to see the info you want. PhpMyAdmin is a tool used by developers and database administrators.
You'll instead have to use some kind of web interface. It seems like you can find a web interface here: http://dev.bukkit.org/bukkit-plugins/ban-management/pages/web-interfaces/
If you're interested in knowing why the players are shown as the binary type within the database:
The data in databases aren't meant to viewed by humans; their purpose is to store a huge amount of information in the most efficient way possible such that a program can easily access and modify said data. So rather than formatted times like "1:26 AM 11/2/2015", you'll see something like 1446456440 (this is called a unix timestamp which is the seconds since 1/1/1970 00:00:00).
So, because Minecraft uses UUIDs to identify players since people can change their Minecraft username, the database can't store the player using their username but rather their unique ID. And these unique IDs are best stored as binary with a length of 16.