Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '131cc62d0976e9aec1112c8f9dfbb9e5ee796f0e0e2247d26e4fde16ec44df73' 
  AND token = 'hrpq8H88Skji0qDa5m+2enyTXJxBTPOfWGbeyyXryn0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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