Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '59e61d80e04daf3ebbf117de7a11fc110eb7bf194c25af13616d380323598cba' 
  AND token = 'Malcc6p8BMinfAxi/wcrIWM1zXz7VaoIeffqbTtCgiE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}