Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '82834bf86c7c1cfa989c405bacaa920c0b458a0b9f2a09d808e87970035f3044' 
  AND token = '2gXPw1WDwUig6WIpYhkcX6D2xt3gKbD6FQmT6IlKuyM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00047

JSON explain

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