UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = '6Lzk4REJPRviukW30LIWzoJvtbXXRPAhyT1GkXmt6m4=' 
WHERE 
  key_id = '5ef398e87be6455e42aebff75e442a84d53bf59f95be69b0e67f1403fc681983' 
  AND (
    token = '6Lzk4REJPRviukW30LIWzoJvtbXXRPAhyT1GkXmt6m4=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )