UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'MPpA4BZx+kHQ4TWRudlikdwQ8kd+8wa3jI1fBNP8SWc=' 
WHERE 
  key_id = 'd6cbbb9fcba610dfaae7e5cb1e0927a4516337f2b951ca81133f548c25ab71d7' 
  AND (
    token = 'MPpA4BZx+kHQ4TWRudlikdwQ8kd+8wa3jI1fBNP8SWc=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )