Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7f882a35eb851de6f2222b75f115a17ea46932d9e27ce9d9f205156356041eb5' 
  AND token = 'tEVAMF+79zipGtPkVraCcWq1MripFawX45ODDFfYRxg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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