A field in the database is of JSON type and stores ["1", "2", "3"]

A field in the database is json type , Deposit is ["1","2","3"]

Check in the following way ：
SELECT * from wdk_local_region  where area_codes like concat ('%','330102','%');

You can't find it in the following way ：

SELECT * from wdk_local_region  where json_contains(area_codes, '330102');