Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '805092657c9aaa25a888f1e5c7913c973f38bd1ff0a3b1bde47b25ae26e60d84' 
  AND token = 'bE8yWpUbY41QOVJ6pRftbu1NeiYCXsP/rX3Mtx9K2no=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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