Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f7d96e00f75bca9a2ba84869bc00f8e4f785b8512ef067b65f8a330483101b11' 
  AND token = 'jxI4GZXoWuuHLyVfZe/WwJxQBFinBG86A5eiiQSkjCA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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