Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a86466ef2ad06ceb44436f20cb510684f859293d91d2489303955f7e36a88a05' 
  AND token = 'H3y0a/qGBVG+35eA9mnauL+VJP6RppUxvaBdNn/gxs0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}