MySQL 5.7.12 import cannot create a JSON value from a string with CHARACTER SET ‘binary’

You can apply a regex to the SQL text which you exported which will convert your binary strings into an insertable format. This was my quick and dirty fix when I faced this issue

(X'[^,\)]*')
CONVERT($1 using utf8mb4)

Applying this regex means

INSERT INTO json_table (json_column) VALUES (X'7B22666F6F223A2022626172227D');

will now become

INSERT INTO json_table (json_column) VALUES (CONVERT(X'7B22666F6F223A2022626172227D' using utf8mb4));