Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '400e4fa4c273ee8b2fc39e83e0d48505cf71556df2426505cf0fc5f189404e96' 
  AND token = 'z5mSj4V8RPbEfOQ9s8LV0Y805B0241UssoOZd0TEsqw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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