Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8da5a91cddde326e57cf99854ce516aa83423d159ff50d42b2011faec5c05c9a' 
  AND token = 'z0IrBT9UHoUHqDflu7eDJ9hIjFJoFVZcq2Q3ah6glOc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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