Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0f218133a5f0c921c251cab7fe57e33a9ae8e164a0dd7c7b14b7a7ea7736b127' 
  AND token = 'xC3WzKDHd/9Gby435gKNPbHhchtp6bMuA3E24mp2EHk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}