Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8965a6cf94ef90edba4f44ee20d7572c83313c36d124487bf15ab4c7ed4d2bfd' 
  AND token = 'qy/umwCwrlwGGTv0Qkv9Gbi/JdxyZ57pP0rgiddPeNQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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