Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'da9b4398d428f431a85b8376c33dab60045af7512d101d35cd8671b93e5bdc5b' 
  AND token = 'Y/Lfi5njWU2kO89i1PCk+30Xfz9MyU3c4bNAH3npGak=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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