Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4bc7242bf8e09704d792b5f419c08ca02a091c2cc9159cfad3c45e689a4bdfc7' 
  AND token = 'KtXEATJVScsnWC7JJJH8H2gH189v7gB7zEa3q6PLo54=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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