Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '00cbc41b4237f4a83c4c4f881beaf09bcdd1495ac0a7f9ffe5dd71f8c88a9341' 
  AND token = 'DZ3as4ZpUD5vGVQ0Qu+freZc1xKO8mXKnzZZmFq3SOM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

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