Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b2712331033be3be77bf17240b0e99c79c6dd47b46295d111437a5e1b3850404' 
  AND token = 'LFPskhIypRxzYNCw5GTyfanXuBK1IwWKKQz5bz4Q4X8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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