Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '044f135cca079884fb1de74c0764b026f92a66c5da9eb49f1b5e012942288912' 
  AND token = 'ILOWGGwfNT70dkMuFDbqOWaTODELFQTO/zkIe3K1dTQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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