Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '03fb00231fbb5e4883b81a4ffcbde1ce4665b69843c284f559a60f44f11d12b5' 
  AND token = '5annrFVLLLEQO1F58gpaSOSK9z1zT6ZUOJ+HwO4p27w=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00054

JSON explain

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