SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = '9e4b235c73984d73062c956b2146ad18de4a0020d302b13cb80ac0a7cc76e094' 
  AND token = 'WxkzkfDmAfdVmo7dlVP/w1gWZV1oG0FV3pAlRzqQyG4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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