Decrypting fields manually from querying the db?

[Mang Yau]

Hi, I would like to know how to decrypt fields manually from querying the database directly. I am using MySQL and the MySQL CLI.

For example, this is the content of the encrypted field:

� ap�s��vdV8\� �P5�-X�9�m��cB,j�"������> ����j�~0����zah |�_�������H��

I am using https://asecuritysite.com/encryption/ferdecode to decode it (using my secret key) but I get no output.

Thanks