Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '76b254ce80ad34803e79db24e0914998b5de952332fe45eaf2eea57d03287fb0' 
  AND token = 'B7Apz859D/DYFow6nrraN8BiPsYxzsg42We949VXXic=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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