UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'u9R37bEDZUCOAXHyDhn4JaNFmxztXZLXVRAeXpRL+a0=' 
WHERE 
  key_id = 'e8c344493544ce52dbac7e3412e83ff28395be9a1370377449afcd36fd09215c' 
  AND (
    token = 'u9R37bEDZUCOAXHyDhn4JaNFmxztXZLXVRAeXpRL+a0=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )