Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'cc8364d3015ff875e7ee0c2e39b0fccac2566dcea19dae0c62aa3793088cfabd' 
  AND token = 'BILZSbMM5lbNA/UWwur9GU/uV5Lzrjjk91/8hFH79ZI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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