Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'cc9726496b9675f7607ff7401d1bf760dab0f846219bf69ad15e2857d6cc3a27' 
  AND token = 'uqjBZgkJjta56pkWaWkPvIycEZ6u0T7quX5eeTkcZpg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00113

JSON explain

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