Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c45d154a2860c0ad7c6e91d4b75690afff40387de49ee1df50efe8efbd9b821a' 
  AND token = 'yHbzm3GNNLRzrvtf5wheMdPkp4TgX1GEopG4nUDu/b0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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