Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '23293a0d45e0ffd6548d6c68a966c74972ab0eebd42eb092a2fdf56ca8ffc2c5' 
  AND token = 'BzP+5SZQ1ftNMIQ1bMPXHMCFwrl60wH2lo3yCTkN2TA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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