UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'cn6lXsW2UxxFpPLCxpXnL/gYmG5r7bneRnv9omTt81c=' 
WHERE 
  key_id = 'd0faae34f8e74a2a2b089bfef83256c540d853555ef4314ec0575080be1f2ce7' 
  AND (
    token = 'cn6lXsW2UxxFpPLCxpXnL/gYmG5r7bneRnv9omTt81c=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )

Query time 0.00029