Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0ee2cf10c90980bbeccefb99e2ccfece723be0d754da4bfdf19cab97d9435f8e' 
  AND token = '0+y+/ghGDuavyUhaOmX3S9tFvaox6r1trx/44Suj0ZI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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