Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e1fc5a68c339375f93bf01d994b08d4cc9a7db9fcaaf95b2f986a7eb898955ae' 
  AND token = 'OyNBKLWL2hsjTODaIrJ7T77suqyBswo3gbWrI3nFQnw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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