Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f9adee7169ac71100a2ab1df635209487d7c40b50dd5e5a16991ae6ffc10398d' 
  AND token = 'eqmOyvUzfJhcBKdaSYgNoFuvVtWsa6dW8NFcINWYO9k=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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