Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0d60a92450c3f7a2b4f40ef8681a183f9310d317eb119a56fdcbd20496603544' 
  AND token = 'qmu33WCYnpreO6AHYCM37Gt7jCPPVqau/SagLmAnt0o=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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