Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1cda994bcb56dfdfdb16b426d9819505e1a036dfe3aff018903e56a648b732ea' 
  AND token = 'X72rDcuocyVddy8W7VHlj5t0MGP82DX/WdHei7wEu+w=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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