Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b88d63375ae942a3faac3704480763c7aa9679873c41fb3b012382aa160b5212' 
  AND token = 'tRApp/drkX+1LcW7ukEKGEJcrVNgrdTPmwIV4d7c47U=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}