UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'U+AlukwdBQ0PFBm/HhGrvPfQWrQxd4IB0QrUUnzICYg=' 
WHERE 
  key_id = '817981b686eb4f3750aa472851b930f2140f326b031e2a614174b6a5f5a3b407' 
  AND (
    token = 'U+AlukwdBQ0PFBm/HhGrvPfQWrQxd4IB0QrUUnzICYg=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )