Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f47daef3b60dc87682f7b6639ddad23207a55301212b5e05511ee530502d179b' 
  AND token = 'HaGUTLIOjSyWxImP2kGrUYpgEluMXmLrHwdEVIbHzdc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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