Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'dde6bfe0a0814ce4fc9844355bf202043cde8962bb7050a6a9fba0b1f95b672e' 
  AND token = '2AK3G5MxtnchiMQ0CMQLnfpnIlkeyGCUMUtGuLHiB+M=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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