Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'abad62b1b8f549e5a9ed6be8f51ba8ceda8197bf3fd7ef4cb124b0d6bf760acc' 
  AND token = 'SXIff/UZLcGJZBnND85/89XE86MqpmC1DvxY184sRiI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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