Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '9670db2aea07e42c3959a510cad083ac6d49766ad1b7d94357e04e8b32734600' 
  AND token = 'X6cekusyhrAI2TLccasc2ftEkQUN90ueLdWarqmcn7s=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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