Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a941324fd301fc786485a1543b37467bfdf20124bb7d62ba9bce095865a8e8e5' 
  AND token = 'Wk/82J6QBpOBPa8lFfa+aWwBtkNipawlh1RfvmEZMjc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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