Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4e943e4425db74140cc74bb1ac10894b42ad63e373e35198be65d93cfb972050' 
  AND token = 'vTa1m2C1N8XtkUDJn2Xs64Q3qNl7QWyd92fsLiCNbeM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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