Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2facd711d21cab5ade5159bc5846680ee5035ecfbcd5018c0ce6910d750d88cb' 
  AND token = 'qZd8aiEwXQQRJYBBfhfWFMLXeJeW3tv33HTTERPbi30=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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