SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '69ad2d9a95521b27d37353e7e0471fa5d90837cb80446314800617d9fd6e21d4' 
  AND token = 'MhkK/zWX/IWZs/HQm/3L8nqPmViLsdk5NlnCfgJhGX0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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