Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'afdd4cc60391e7a086f29722748bebe26616177a2fd3fb041c8946ecdf762fb6' 
  AND token = 'C68ywx1zSnEWGFfyGNxSImpEOSEbHdayrWhCyyGwUB8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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