Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e6c86d505dbe9b2d078882d0f0c7790e8aa0299e5b1b829304b2282d6833c93d' 
  AND token = 'Wmng6/+e5PwngtBoMBv1C46m0bWxSWdD6xcZ57VEA5I=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00015

JSON explain

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