Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'aad8cdf6a723f0977805597130a995b0c76a6677faa2298a6f5dc15b00836e80' 
  AND token = 'WwVW815pOfauDERAIl91r1uFY/wi7/sGzo9UWWhON34=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00049

JSON explain

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