Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fd6066d92f29ce61b8140d88ae33a102746741eae415caefc32fc3fe91cef662' 
  AND token = 'XSD3X88Hu0QWhfWVZOFwqFH90c5vHMD7u7wL6OTHC7U=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00051

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}