Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'be94cfc52b0cc7b1b6395dbec77627ec6a3d9f74adeeae764b37eb69f1e9184f' 
  AND token = 'GurAW2fbd1XiuL9wbxdPKEiI9eQQaWt773thLyAsluU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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