UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'W6LtgqxtGHFaY8JKB1ouWF4123lJkxA6UIgciWAiXWo=' 
WHERE 
  key_id = '50c70712d3563005845f22d590209007dec25e7d8547e72e3c1234e1107d8b82' 
  AND (
    token = 'W6LtgqxtGHFaY8JKB1ouWF4123lJkxA6UIgciWAiXWo=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )