Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'eb1ca2cfbee6eaf4a25b2a3e24a57008b4a3698bc3514bc9495732f1fe755678' 
  AND token = 'bRwATGIwULe7zzu6jzpSWUAMza2DCI0YlkPsEhgB6xc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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