Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f85b4ae405f0f025d6be5f37988e11d4a137f089028a6caa5d3e2109263d4d42' 
  AND token = 'Wmu1LbBoM/+4UoM3QOjauaoE3/8cTuAqcsRh/CJrd2M=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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