Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '134323a932e8f452d6e37e278dd3813cb844200b3c6c74cb0d67749053b54ed1' 
  AND token = 'jDLUEwsLuPysRctst5ODp/EyCHPlVIiuLQ8UUh5p2mU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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