Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '170ec9999ca4358c4a4e47c2194d098f3c419c93cb4ead3c5b40d5cf8a75f2d9' 
  AND token = 'f9p1YoFn0zgmten0hLWoypSm5pPtw2jSZW3OmjBeN58=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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