Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '91801e4026fc57e577f89795d67e42c6c5412bf42fc683a49165aacc94beab0f' 
  AND token = 'KyMslEru6ulw2rXKVL1Wi+5c9Ehq1Tpzj5vAU2/j9h4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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