UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'bc//Vnsqbh8ctFTApZAk7+aJLM0fJdUMW30S6/cbZIk=' 
WHERE 
  key_id = '6d2338e35886765f2992d28019a7457c9dc65fc098d4a10b3e13b3bec45ff244' 
  AND (
    token = 'bc//Vnsqbh8ctFTApZAk7+aJLM0fJdUMW30S6/cbZIk=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )

Query time 0.00030