UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'mNxDMK1bFciewAht3xJtdmy2bbjUAWHZ9GTilYI1PkY=' 
WHERE 
  key_id = 'c51973485a4c2ec2b293aec9853dfbd60eeba6943dc02316a674b7dc05045efb' 
  AND (
    token = 'mNxDMK1bFciewAht3xJtdmy2bbjUAWHZ9GTilYI1PkY=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )

Query time 0.00028