Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '34312265099dfdb34a779246d8aeb5a9e99b574c7527eb47f51ba80d8a99f9d9' 
  AND token = '6VYcezbyswyQXA8AP1d3caP0DogyZIKuZVS/5VujfOw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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