Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '79cc093294c8c25e4f886f9cef12d8f371778e1473af032cd80d2109250dccf3' 
  AND token = 'LZ+6mcWAI1dL2FwkuuvNf/e1fcg2sLmBy5R4VQOJziI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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