SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '62f289c2e58bb01ad33858b7374ac72a7d153f1137a0f3469ffc9796d842036f' 
  AND token = '2WZZHuJZSAmeOqqBW4lhpnYg+D9JDFlYq7a3nTJ/xaY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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