Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9db6d1b9694844a0774bea7d81595e1e77e5fddec8e297991fe6bf5687a9a7e5' 
  AND token = 'HAXS4v1vJBXByf37+sg0qcPBOAe652/U7sYP1ahhPcA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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