Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'de0396ad98ef82be57575a0690d85f3f66a5c56f02a76f22b66823b65bc40b7d' 
  AND token = '6P5dWftPs9V7FvaXJj2Agdfcrp6pzYzWi9bkJx4hldA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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