Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '777f2a6c7a035d503a43733ebae2c9fc531c04f4e936c008a8ce983d8e196185' 
  AND token = 'FIhZUPUZKMKqCnRugR11x8ttaLwuXMOQt6UAmMG7QYs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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