Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2ca0947bb5010ab1811bffccf2951461d106e3e246311aaef26b53644c5c35ad' 
  AND token = 'RQ93o1rAvRm/VIW5YOLT+jr2NnjmWlIt96j8aqvV4Bk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00047

JSON explain

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