Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0c40dfd76705addd4ef4cd8a98d8d44548fc03096415803c35714cbc5bae9493' 
  AND token = '45YWcr6Z3gkO34PL3/n4TIwSj6GhmYcO2xTEmEkEolY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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