Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd0302007358336762d2e602b639bd13bf2c570244904db678c3944fb81b6b2ad' 
  AND token = 'ldZhPk/1s1XSLf6qibAZhqV8oqZlFwb+CtYVM9wOZlA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

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