Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c933fbf4e1fd331a122cc382ce4012fac3a4dcf6576589534261d0ebf815714e' 
  AND token = 'V5UnysNcKy7l2LE3m3HLefLbW3zk1hY0qA9GP62qwFs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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