UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'NxW2b2u66gJrDvCMWO9mrDn/Y1nB8YNK1nYY1mKcomU=' 
WHERE 
  key_id = 'c871d8cd7778f260719ff912910b1075985897bee1da6b21f3d7e3a40e5c7c1a' 
  AND (
    token = 'NxW2b2u66gJrDvCMWO9mrDn/Y1nB8YNK1nYY1mKcomU=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )

Query time 0.00031