Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f1ef829f876599ac8c7adf5e82356d6845f68024768a861925b8940d10d408ec' 
  AND token = 'HEcZJraxX5mSJkncUNth0yI8VKOtwyZ8ff5rBLugJSk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}