Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f3657afb3ef378d471cf6509d28f3f632802e64e589bb3ff715eff1b14f475f7' 
  AND token = 'tKtUwjGcLCpGlSTeDUADDBLTHahBtvPbD14Z/S2qoDA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00055

JSON explain

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