Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1ebdca96e1a9d977cd6c3d48044f7390704c83cde94d29fdc306a778cf980fe4' 
  AND token = '/2ia6xTBJtU5xrBkIONdS/4DsxliTQmVP5TjX57R3bQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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