SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '5e61c2a765ff7b5a3452fcc2cc9284a45ca025caae482af2d194b486b6137d80' 
  AND token = 'bVxDHo1XqLBt+eVJTEHo7tzzY8l6B0LVIlRJEb3RcGg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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