Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '54b92d2e73664a3b2bc619cd13372f7a1a38f4974737f6ca56e360159b4f17ae' 
  AND token = 'TppSmrNudxKdVmmpVaTPM38WRD3i5ThY3cDl0FF6aeU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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