Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '89696f3116cb71bc2943c3bee2f775426d61a5eff771f93daa82156f2f19322d' 
  AND token = 'llXd2KgREM1lnA6IAQ1lU/KzaiY8tsReIy7K/E4OZKc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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