Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd028229c49d67270800e15da34ba4cb31ae87d87289893bf0e9032ac0567febc' 
  AND token = 'fLzoWtf2v49/ADOrRkJSJtzkKiL4g4ad0f8h7KQ8xVk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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