Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '39d30ed6fc9e6f99e71cfae889eae611af0de1b8ff4a6356c1cd77be2ace0201' 
  AND token = 'iOYFg1QozP5E/UtuUPgOrmJ1z1AwETjG5kOtrir8k/E=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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