Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '372fac3f5a70a5ae84f6271ec31588896d87afb4d24a578ceb2279cb7a2a8ecd' 
  AND token = 'IIddm2EaBszV/ESDRQRrSfyAPrm1Z+QL4k6EdeC925A=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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