How to get api key value after api key was generated?

I generated an api key by usiing below command:
curl -k -X POST -H “Content-Type: application/json” -d ‘{“name”:“apikeycurl2”, “role”: “Admin”}’ https://admin:admin@localhost:3000/api/auth/keys
And get the result:

But if i forget this key, how could i get this key again?

And i found a string of numbers in database, what is the relation between api key and this number?

sqlite> select * from api_key;
1|1|apikeycurl2|23ee7538b29a0532259b8c2dbe38eed0834e112f36676a905afd80925daa92f69827987cca2c516b00fb6d5567c4e9da9f9c|Admin|2019-07-22 08:30:14|2019-07-22 08:30:14