Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8bcafe35dd42ee6fd41aaff750bfa9fc9aa77c8bdb5bf362766a55b7b3aba940' 
  AND token = '5NNOh4mGXE4qcFIiAF935Q3/oVXJGituvKsJymvFPsY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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