Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3b4fe8e1f96ae424e91943f314227e83a05cfb7a27bb96dfb4d937228c43aebd' 
  AND token = 'zzXZj/uaLl7OJSJD4b97lhvAK5krd9rdG7Lr57FyCj0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00049

JSON explain

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