Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'eb7129e3627731d0a92bdc678e6e9982b7bd44389733b5d78e133d412dbd7fd8' 
  AND token = 'p0H73fKa0JhZmErAd5Lf/xTcXFWSDQaJX1A0bZHRSoU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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