Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '30bed01f4e72467a3f57bdee4f96629ad98c4f26d1adbc56b7b5829a2d96c28e' 
  AND token = 'm/+PxIkAd/3un6deZ16yzUmu4plxIGwJ0s+N8oCxZa8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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