Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a737e22f6ccfe4035cbe119410c23e192cc887402db5994fe3861241946bc4aa' 
  AND token = 'sLCJ06JWLw2kqiSvE42SX3froVYJm+fO7z6DjOOTJBk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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