Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'ce027fedb011ba1d6867675498f49e701760fd0d658eed72ee6f4d7d93aa6e20' 
  AND token = 'pku4e90I84jTIJ8jGkWukSJtBp9jHjmh3+gM+h674ko=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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