Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ba70e3a6c0f58278aeea8cc25923264d04e1e03b09196f9b7d310809bfc1d45d' 
  AND token = 'm513Z++64ZJ59T9neB3n6WAbowFyOKYg0JfKiqk6tqg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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