Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '547ab06bc259fd215d5503f59e42d3e61610c49721fe33650ceb6cbabf5f0d31' 
  AND token = 'BEUAfe9SPcJh5NBd07oqeJ5b9MLgr4rebq4e5gp6F0M=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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