Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '434238657fb98c4be9a48e84fec46a5388024ffb7779d80232ba61ec48032abe' 
  AND token = 'yAr0lS4KRqxxqpp8Wz8bcyb0CwfGiNJSegySoAN32nk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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