Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5e9df85ac1e3d9a27ecd0ea902d954d8675733dd3c2a2fb4a8b37073b9eb4775' 
  AND token = 'MzaTC6LF20fJITWUbLp+ifHTrEEDhJ4r8tG7OhxNrcU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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