Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9bc41afc50ee63347c6630d6a569c006e450a1bfa11aa87d5c7407fd54e4eed6' 
  AND token = 'HgwpEBWxpYv0rraV2tdam7FQEuDkybSCy/f5OMe6IQo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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