Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '178567df6e8ebf611588f62858f1bf7cc62ca6af200c2257417d2506512fef70' 
  AND token = 'LUK6FicQ5hvmarT4PEDjuLfFK0e0QbAl+af/fh8RpCU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00047

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}