Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e8e013e460e4cbfd71cf4fc87264c40c90321d5c15734e07f222193a91b97749' 
  AND token = 'nKvIJnyq8rGGQET69zbOCex+vda/45q1h1HnvvGZrnU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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