Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '307dacc698a10a91cfd69981db033ca4c74b9c45bec90bd68ae527a4c93a967d' 
  AND token = 'afdvj601M026SDjs3Jg+6PoYeYxepYLSwAvlvEZZQ18=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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