UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'v108i27a9xmBUeS4CTQB1G2Yc6wTrUH40YyQjPmWPso=' 
WHERE 
  key_id = '4f50bf911027649b105bd9a1bee57d2e7168d935e29f6b29d18727237af36e6d' 
  AND (
    token = 'v108i27a9xmBUeS4CTQB1G2Yc6wTrUH40YyQjPmWPso=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )

Query time 0.00042