Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1a1393fa4be05bf15243784efdd07cd2a169a135dd6d4e36315ccc6d277375f6' 
  AND token = '841J7CireNh/tF+Peutlm1D25cFitla/SEq0rwhHJqU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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