Sandbox

SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = 'ba9b55fb61de6b3425767ac14f61f1b844a99b83985191ad8fea335d608ace49' 
  AND token = 'Hpoo4CE/IYLKWhul1dq2s4FWaAt2sAP0YUquFdBpsys=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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