Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '64067b57d426ae3000aaf65f8fc3ba3545ece6411b727e6f7d16b50755131b06' 
  AND token = '4IHAO7z5jpf6zpmJg7wwoJg3mGEfFyk8h5heR5AhTN4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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