Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'bbfad4c4eed33987f4e710642433a02ceb54a943438a8cd6595e194633214d74' 
  AND token = 'gfJp3nBZyrfkCSILSa2K8ZVRu+d8rS+cAYuHYzNgAKg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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