Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1486d6d5f348e8f4f96a314b96d96536b645320031732bf30a746c7daf1092e6' 
  AND token = 'NOtHqa2188eWm+MLSyc2GMfVVqV/TRfOPmTsXHYUtDA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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