UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'Khcc4cF/BG4awLmxdocyi6gA9If0fYudufiyYv81OFk=' 
WHERE 
  key_id = '0421c5175e9598054a124feea1e168db0ae6cf55f87121b826e3290166a1403d' 
  AND (
    token = 'Khcc4cF/BG4awLmxdocyi6gA9If0fYudufiyYv81OFk=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )