Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '67de1fc4776656b46383e437384a3194878322a4ef505176fe68216a7fb5b34d' 
  AND token = 'o+aprTLWUc62uvb7b4hkjGRWBgx9SlSxlmGK6jcik3Q=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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