Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7932101927c22171164cf1c04d8f01eb5914d69159980c9494abaef43e6db69c' 
  AND token = '70BwXhavAAM6ij5WxuZJ0XEXhqbfn5LKwBQ4z8Lwfdo=' 
  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"
    }
  }
}