Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8974777e4a545761835f831f0b4606e38dbf795f4674ccfa008f54614e76ddeb' 
  AND token = 'mBsq3GEFfPb9FbzPCnmzNQHvrqy7IHARMU3Aiva0vXw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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