Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'cf87e3c5f083684943a3186ecc84d9b7be4d3d9f5a2223ec81cc20470caae785' 
  AND token = 'luGKxMPS48HK9fWcgBATbGAV2Hk+UqcVWGNB98vU5o8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00047

JSON explain

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