Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5394d976722a2130629078d9f12b0601223a090dda6d3bcfb96e11e5aa3901e7' 
  AND token = 'tbjvc9Dtk0lhSkLZL6AgjTgCYAR0b6bLTeurQAEt7aA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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