Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c876a72bffdd564e2d1a89dce3ebd326dfa86c40b78c76cc0723c4f4b4801c29' 
  AND token = '2Gf++neqqn7+P3vLue4pOoUWwTYXf/FLh3lxJPc4xXM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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