Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a0d5d1858e522f4b57edb61460f9520e6ff557a2ace1d2fe1bb4b199bba001e0' 
  AND token = 'LTXu01yYly/jrf5khjUolF4dqdTR110P6DdgO9vNgCE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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