Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'adb576eaed4eaa476a5d50522deb2ad8b63833c88be59d0f7583b6f3e632549f' 
  AND token = 'Z2ZehVXkanJ3guEkCouMGKqqf86z1K4do7Mjf8EY3bU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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