UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'u6UAhw/GobAoia5Rndc872SIXegAhhGzJP4p5OS9ZQ0=' 
WHERE 
  key_id = 'ad2e52a24675188daf926c2f40ad5f6137631a6c2aee08437e8a7e6dbc86820b' 
  AND (
    token = 'u6UAhw/GobAoia5Rndc872SIXegAhhGzJP4p5OS9ZQ0=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )

Query time 0.00030