UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'n+p4Y9g75io96/tF0HdTzO8rnnV/yXs3hU4VtAAVK3Y=' 
WHERE 
  key_id = '19e37c21548bef554704aa5a58f2b30194030d4314ff2ac9f703d6f9b0437602' 
  AND (
    token = 'n+p4Y9g75io96/tF0HdTzO8rnnV/yXs3hU4VtAAVK3Y=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )

Query time 0.00035