Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2aa3093b9ff8d5ae0ae4989cb52d016a6e9f9b829a310f0395f2fd89af856084' 
  AND token = 'leJ/2Z1tTv40exCrxNlkFrU0BU1IdaEp+qch38AF+40=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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