Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd345c2036302080b4c5c370d1e0ace45a35d660cdb04a94e2ea67ba180851760' 
  AND token = 'tOnP5nB0coFOik5F/6r1IhojpqXzQYXL22EV5DMbHDc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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