Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7ad50d5f135eb32b323b6c76a3fb79c8045459ff530365d2f7242bad7d1d2728' 
  AND token = '4m9QGyXdrSa1biKR5G6dQnER9MyKyVld2YGvzWNrDmI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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