Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bc01fbe056ee708a255489ab161878d3c87c3dda430457a72b65b5958af064ab' 
  AND token = 'CTsZlCF+QwMfF5yOjDWoX40wkFF6XVIMy4ODV3Xfd6w=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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