Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd866d9b7581d3ef4e57a9832a763942fac9201384bb51f09460890a016b9b0dc' 
  AND token = 'isX927l6R2PqEUGoMvHZDDlWWNighN1G3gGCGD66K7k=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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