Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f315aa1b6a028db866a0c17559b5e75d828243fe002485979d957ef619f7b3d7' 
  AND token = 'PPEsA2f4NSDm35wbnfdcWvB2AI5ZmKw4kzKjSSO3myI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}