Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0c72f12a35202a6bbaca528d245b317ee45bcf37e6a1512e9ba830395e581457' 
  AND token = 'WRH4jEY2mKpJmojQBqYnvTigtP+gaaBsicmWbloANDc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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