Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ba41229ef34e6bff5505824d7d4cd618a1a5972ebe248b5c82ac5085e7061791' 
  AND token = '1hefLitS5zDxcEQ/kLieNgS91MD3OyrAOaodlMnkaGI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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