Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '46bea0f1e690048ddf8db971f890153e6d87073c64769004b29bee9c1ed0e95e' 
  AND token = 'Skr7efSycMcctyrRNYq58W7LJhCzMaUqM5N6p2ukEVw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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