SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ab80fc52989e87d7affe5f621f6a3ae181398098466bf1635574570897fd78e7' 
  AND token = 'mIYoipnRrXYIpdvbkVs4Vpgh3yLDJHtZUKgd02uSmU0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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