Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '897242ec49ee3c147baa38940a9d00b520ab7a7d8776f356f09a8a0cd6f777fc' 
  AND token = 'qSAEuZrf8hB6bkm2MfLJlbk5+lukSLISzRKenwDCK8g=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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