Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '05d95474635b345fe3c9d39b7241d1a6d339deda6b5422f16a2ca455cb0ac2a4' 
  AND token = '4XhB4jQDJgw/VeLHt/p3KaaNiaMwhCwGFQam3xysfUU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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