Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '88b07db46cc33590869562ffade06128fa8d63adcc783088b57b02f4e137b0b9' 
  AND token = 'CHq5Tm7CVtGNWXKiNgUUO2VGnewySHs9xukvYFqa09E=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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