Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd69eed6d038d521b6b4aa2b090d9b8559a3374a0bb11063de6df61b85642829e' 
  AND token = '4ZodzUe71KvkZQNkInTOaNEca/Tz5GIUFlsC3g3lmck=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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