Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4bd872a24648fc64ea9f6570833dd8ec928907eead1e476927f33c34bfddc2e5' 
  AND token = 'u4hdL69+1yStX92IgbYOZMqa5VqvagIY8VkmKOYwcg8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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