Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '313ea86fa7d91c7feb18d1cf364691801e3920e044468e464780c902c7ea5fb4' 
  AND token = 'NLawQpzunuy0hD0zuOP84y3z5YUpSu1QNpcukVI01Xk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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