Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8d56a0c33de4466bd84f4c367165ae116b9b88feae089c1e631fdc87fc9db239' 
  AND token = 'SPmjYfEtd9NE4aKlNLtdQqJlorvS4B8vsxOW7fsdlYI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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