Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '589da3f99a619a264c44fa75db7caa8f7180a15b1c76f05360bf6cb520a01afb' 
  AND token = 'FbX249dyuWHlQv6HGeA7+absKiiYIqbb9bLygsDIR4E=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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