Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bf6a1e0249e96113b6894fa81776c0e0647d2b0765d0517643dad85f385d258a' 
  AND token = 'jzD4C74Cq05bIXY3h+K8b2pdjwE9JWBu8MtKUMu5qNA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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