Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0d797ac312e77b7d44e08973f7cf48e338d6b181445935176c98f3db78f9dd98' 
  AND token = '+biTb7CTL1y1f1424G5kfHpexOWhVwVDxzyt/a62e1Y=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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