Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '03e1043d21cfc5287b94f02238fef96c9f6e0896902d6c265168f5374324e9d8' 
  AND token = '05/Dm2d6cbuqGzSr4nEnLpHlMkxXsjPoRwx3fbwlWVE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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