Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '58a041a8938107da34cac31be047b38bafeacc8ffe26bf7cf89ec453de944c9a' 
  AND token = 'LBGag+4+sv5KXK9+yGJzPEwg02ZdhwoT7biS3uKDblA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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