Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '17e5946ac6e8b2c33a7262a9f3c3f89b1c08cd6b9a3155848c794e4edae9fdde' 
  AND token = 'Gcl66qsJQSu5yilrxLgrscyQVAnP9BrF24twVZLOdUo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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