Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f4ced0beb69d494227a7d715a2ad505e71237ccfa45abdd6010b01385cfab2d8' 
  AND token = 'FOK4g0gnGWlQo5boGn+X5Cs22hiCfdPHqevnNf4i25o=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00042

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}