Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a013571dca94c5607111e1c4db19dd5ae30d1bed02a70a3de385e22caf36f061' 
  AND token = 'ALUWZNx0bTmXTnUJqNfULlj5F59yOZYBuv2OAkU/rKk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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