Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '18daacb9c0d9d80b3f3c2a7c329e0937449fe5ff91b04b02b175e9ae758faa39' 
  AND token = 'IKZ3zFfBkB4/H972EiwD090tThb6raa+YeDICEzYrtQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

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