Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '73e045cb4872d419765112106e0bbfadf894c4bc74cfabca881b7a2319cbb971' 
  AND token = 'UNg3TgP94UsNhlfGv4qC9dcKCRGmpDWcwaRcvXE0G3s=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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