Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '254d88922d8278d65fbcfb8dd0b8d2ea835105f37d1118837ba29ca17f13458d' 
  AND token = 'H/s6DEXU84YVMwRKGtYoQVbxZWtn8a/UwbILwIezvTo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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