Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e4674fc14a26b8f24e13ea2f6558c9e91d564cb6acebd69af27e44465743a30e' 
  AND token = 'ZMQYxoF07a1H8FiHx9ce7KBO2n0digl1gFRRJi1SCIo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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