Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4d1dcc613ad32be1e637d33d5d6b3d420ae5ecd7eb2a52f2fd71894c7309a55e' 
  AND token = 'yDXsfKpKK8mJjYg2qpk+ao4C7+r6eOZ1jykurmV8pYA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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