Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8d4ede25e7e48d1c6f36397cea53717ef889eb86c096fc1d174cd4d4f98f64e2' 
  AND token = 'ITFfxA/rdspsRobTA7dnRQW/JFnylqWIGKwinltw17Q=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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