Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'cd65afcac7d5a47ab35a906571b48eda5a90feb53a046f187d499c28d63a341b' 
  AND token = 'IUlt9nojYptXJRrnuOKCPNVXGUXeEeK0S0wTYma/W8E=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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