Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '77705977c9c8167c86db7e5b20ef02d3001a52f81c98ed92ef363d2a5f803251' 
  AND token = '10LGGNEWe0QZX9paD9IeOEAlswTdfmANr0napxzkFj4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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