[QUESTION] how to restrict users to get specific prefix keys.

i have set two keys not i want to restrict access for user to a specific keys.
127.0.0.1:6379[190]> KEYS *
1) "grape:green"
2) "apple:red"
I have set below mentioned ACL but i can get all the keys with all prefixes
**ACL**
ACL SETUSER alex on >123 ~apple:* +@all
OK
**KEYS output**
127.0.0.1:6379[190]> KEYS *
1) "grape:green"
2) "apple:red"
127.0.0.1:6379[190]> ACL WHOAMI
"alex"
