SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bdd2fd08b08b6a58ccfa608f9319a6ab5cd154f3a69a38546b87b0b4714e55fa' 
  AND token = 'AZSs2ixV4p+v47KvvBwmNZKtEZo/hQV6EM46RBW9l/c=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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