Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '08a726c323828e17277a20a53a0d59a950c63fea03fdd635bf86448bd0966676' 
  AND token = 'T+knYHkE4qOqfom/MOf8Gv7eI2WMr2/Oq1mrurlnBNY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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