Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '0d361309b354ce159d50e507f0f4d243561caaebb50e36fa3b18bc0a3f05d5da' 
  AND token = '90mbjxuO8TfLO6O6eQDDL3FznWA/gD77YVZEduMRIr4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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