Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'adee7aa0769c8b5c855f80667cf6b2e7e872ecb320478bc4dfbca39e45452aa8' 
  AND token = 'ME3h1TFoNbCs5gIgqfmJz008FyqZqp5faAC1soUWK5k=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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