Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '44ad72138d09ceef5fad2401a3b3acf939442d3fcb53e152959d94cb4bf150d9' 
  AND token = 'Gh/5qFTOru1hm95B1Y19W7TLFuedzm6nbKXZIaEj5sA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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