Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '147d9d7625fb67af788eb739d8b87e003b3c68a1e1285a134ae7cb82260d5ba1' 
  AND token = 'hd6LscuzVohSY9akAfaz2cuBdTjkPC5cH4SZ8XyU8X4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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