Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8520fbc283ed44e1dd777e853c31bcc254748004010c66f40cc425a040b2bca0' 
  AND token = 'AY4mGXhjv3peBdNzYkCI9Y2uO7DVOkt45rdVSi2qqbU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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