Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2950c9c8c74fb234adaa99cc26c5285f185755d4361d10186ed4168a39e9cd40' 
  AND token = 'DDwlI3HIYi6OSoo/ZkzAfkBiE7voNGFS42pgB0qfe9E=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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