Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '695ceae835268f4d56b62157ae5aaf1570bb04fcdee53f9378363c2ab04c7959' 
  AND token = '9fPbkwWKt8WYMxDkWqgwuUMiKOPdfyxRwvjZSDp6yQ0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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