Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0160da07847bf0afeaf92e127fc9f49a8d4fe0e7cd2139bde074a2cc367ae390' 
  AND token = '+jDRwhcjgdKcVBUNDr/geJOt7C3K4Nw93Qn6F2hHB+s=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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