Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '290204f1c9a29b593fb50647d5d2aa0bef52ba67c31eedd60456dd9942cd1fe6' 
  AND token = 'sKk2nfJ9CNR0zl01wwGSO4AI8ygmyM8ilDEUE/8/Buc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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