Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '48e94373f114bc914579737a696389bccaca40e8eb3c09df892eb2cd91223e0a' 
  AND token = 'Oren6uC9yrmUHDudQ66I1PyNDh4O+l6xmAdrnmQhCXo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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