Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1375cea582a91e7606319ec18ebb6062ee1b75c63125827132c3b911c2227fd6' 
  AND token = 't+TBlL34wX8lO07iTKMGR79UnVBTg6b8ra+i7qwOGOU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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