Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '85ed5e8c6320209ac3c20ad8fdec3437ad4ebccaf40b86c0d34c9fbbcdcd18d2' 
  AND token = 'VRNugm3RXvMQBMbu2IeVcC346IXYnZsb8zLIWJUfx7E=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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