Redis for Storing session for Rails. why my key is hashed value?

I use redis for storing rails session.

Rails.application.config.session_store :redis_store,  url: ENV['REDIS_URL'],  key: '_my_site_session',  expire_after: 1.day

I can see that in client browser (Cookies), session cookies is stored with key. some thing like that.

_my_site_session:"0f1483b12090bbad4f351643fc4cfc26"

but I can't find key-value pair in my Redis.

❯ redis-cli key 0f1483b12090bbad4f351643fc4cfc26(error) ERR unknown command `key`, with args beginning with: `0f1483b12090bbad4f351643fc4cfc26`,

Instead of that,I see some new key-value pair has been created.

127.0.0.1:6379> keys *1) "stat:failed"2) "MacBook-Pro.local:29950:baab15a038c2"3) "stat:failed:2022-06-08"4) "processes"5) "stat:processed"6) "2::9557f0fd1a32df2ec57b553e79b1bde40fadf878cb6e0ed24f19f6f47376749c"7) "stat:processed:2022-06-08"127.0.0.1:6379> get "2::9557f0fd1a32df2ec57b553e79b1bde40fadf878cb6e0ed24f19f6f47376749c""\x04\b{\bI\"\x11redirect_url\x06:\x06EFI\".http://localhost:3000/borrowers/dashboard\x06;\x00TI\"\x13user_return_to\x06;\x00TI\"\x19/borrowers/dashboard\x06;\x00TI\"\x10_csrf_token\x06;\x00FI\"1I5Oasz4v9kNJhggcW7TaOV3Ud/1M/4xDLrU44DOH9Lg=\x06;\x00F"127.0.0.1:6379>

looks like the sessions stored. Why redis key has been encripted? can I find my session using original-key(0f1483b12090bbad4f351643fc4cfc26)?