Brpoplpush::RedisScript::LuaError: WRONGTYPE Operation against a key holding the wrong kind of value

current implementation in `find_digest_in_queues.lua`
```lua
local pagination  = redis.call("SCAN", cursor, "MATCH", "*queue:*", "COUNT", count)
```
we have a key `cron_job:scheduler_create_sqs_queue:enqueued`, it is not a queue, but will match "\*queue\*", which cause the error above, guess either fix this case or warn user in the readme