Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1d66cd4be8f9a96bf27f824e0a27bb5472d67ea78366e3615d7a01ad94c631ef' 
  AND token = '/ZCFVAIo5zNesJQGG/1yuHctwewhHaLH5Vt5Bh8a11M=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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