Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a277fd5a3ff6ede71e33425e522e6ef9c208dfcafec6bda9c22fa813900526c1' 
  AND token = 'TBFcw07b4e9+CHlavub8Q6Vbus5WFW6AW62W6adm7b0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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