Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2c41e021469bd9bee4f092863c0277bb8d19ddf178ce6c058ce2b8eb5604f9bb' 
  AND token = 'KfzFGoz+G/eD1ysLdRovSLa9A5pTJZIpTUh2Tkt/wg0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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