Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'cdd9cb6cda8c9e1e8f3191bb987dd05be0d93c222f5809aae0ef48065a2af46d' 
  AND token = 'hijQHbNd9cewmozS3x16WnY2Rz3RpebGGtWKb4wx3SI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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