Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '587898d746c1c6c1c4b0924c14597a7bc35204708f307313cc0ae82b82f75fd3' 
  AND token = 'QfXv+KPsh+RlaKYa/xFtbS6Yi3epQbE6BaiOfkqJL3k=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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