Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0b8301c2ebd3a4c7824dda26d8a60d0271edac79314c7193670eccd05d51cd85' 
  AND token = 'nYCAHNu1/ToLfvt+CR+obeI+yUsE+Af3scJ4oZHTBDc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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