Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6226194330979360c4df5ad84a8e119b45d67faab52dff71a12ef79866bdc197' 
  AND token = 'bMUGxJcnu42ASzuRqpvMF5bBzvcGye86vsHvn6fUCfs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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