Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '9c68c075632b9f7845debdd60e95a45ca69d7e84c26f7b1f3fed9eefa664949a' 
  AND token = 'OkiIG56YZwYTByzuIiU4/KrWWYoD7ZWSm88yVQWlQPo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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