Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '11beaafca806436fd7ef079a50073016cc2593536f8cbbfc334356cd710349a0' 
  AND token = '/gsvdhtwIsFWyFsVH3AFRwm3iG0am3uNmSqL9Qr/SWE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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