Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8a704ee50ef287f69474d18d82c023bd9faa124eb26015b6d8452457b2ae2edd' 
  AND token = '9SWs67YuZBkBcSfmU3hL6L6R/HcLGOYruH6tpXLuAPA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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