SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '1a301d2a6f60d5295e6919f86300e23d97879de1cfc505563898f0f461bfbdb8' 
  AND token = 'Cu4hAXVULBnFRu7KPeSyT2mgIdwuzj8cwAGtxMUFRnk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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