Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4c074b3407968f151dcf602f87ee65344ca3eda19c7ee0eac8b5838da4d1506f' 
  AND token = 'Be8IB2PnRux8k1zqHBIitiqSf6ZgcOG2ncpkHJnQj1g=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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