UPDATE 
  vi_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'MNWwTeSuhor/Ji93tXFGPyJU0aROV7dBW/D4FmL2m7k=' 
WHERE 
  key_id = '79c8f68de0f86bc360ca1f08743c138481702df4cbfcc871143d5f511eb8be9c' 
  AND (
    token = 'MNWwTeSuhor/Ji93tXFGPyJU0aROV7dBW/D4FmL2m7k=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )