Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bd00e9778f4fd97182568742283225b331f4c41cddb1ab89ddfba208984ccd01' 
  AND token = 'fSkd30c20vnK24AKtkccJyApjosUpsU9xd2bBfjNcZY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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