Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2480e279597b7718776f7b16c68598507d59dc8d5aa42506cacd9a461b040e54' 
  AND token = 'GjunI8a/orHlekDO/KZ650+9QE2rW8NHzEwBChHiWsw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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