INSERT INTO cscart_multi_declock_keys (key_id, token, expiry_at) 
VALUES 
  (
    '7b538249bca637858c687fe66e3125ee0dd4dba2fdcc029ca6d312e368810631', 
    't1oATjT7QYlVqCt0k2b6FgW9mJ8YseopBy6rTX3LKHU=', 
    UNIX_TIMESTAMP(NOW()) + 300
  )

Query time 0.00036

Result

int(1)